Floor-surfacing machine.



PATENTED' MAR. 26, 1907.

A. PGELKE. FLOOR SURFAGING MACHINE.

APPLICATION FILED MAR. 13, 1905.

I JV VEJV' T OR.

AUGUST POELKE, OF DETROIT, MICHIGAN.

FLOOR-SURFAGHJG MACE-5W5 Specification of Letters Patent.

ratenteu March 26, 1907.

Application filed March 13.1905. Serial No. 249,807.

To all whcma may concern:

Be it known that 1, AUGUST POELKE, a citizen of the United States of America, residing at Detroit, in the county of \Vayne and State of Michigan, have invented certain new and useful Improvements in Floor-Surfacing il'lachines, of which the following is a specification, reference being bad therein to the accompanying drawings.

This invention relates to improvements in floor-surfacing machines; and its object is to provide a self-propelled machine having a rotary cutter or planer head for smoothing the face of the iloor and a reciprocating sender or polishing device, both actuated by suitable engine mounted upon the machine.

it is also an object of the invention to so constructthe sanding or polishing device that it will work up close to the walls and into the corners of the room and to provide an auxiliary or detachable cutter which may be attached for planing the edges of the iloor next to the wall'and in the corners.

A further object of the invention is to so construct the machine that the several surfacing devices may be adjusted toward or from the lloor relative to the machine-frame or may be raised out of engagement with the floor when not in use and to also provide means whereby the operator may control the operation of said devices, all as hereinafter more fully described, reference being had to the accompanyingdrawings, in which Figure l is a side clcvat ion of a device cmbodying the invention; Fig. 2, a plan view of the same, and Fig. 3 a front cnd elevation with the auxiliary cutter removed.

Like letters refer to lilic parts in all of the 'ligures.

is asuitable reci angular frame supported at its rear end upon caster-wheels 2, the frame being raised or curved upward to accommodate the same, and at its forward end upon a suitable traction-roll 3, journaled in rigid bearings on the lower bar of the frame, said roll being provided. with a facing of rubher or other suitable material to prevent the roll from slipping on the lloor.

Pdwcr to drive the traction-roll is obtaincd from a suitable motord, preferably' a of by abelt 6, engaging a small pulley on the engine-shaft and a large pulley on the countershaft. A small pulley? on thecountershaft is engaged by a belt 8, which transmits motion from said shaft to a suitable pulley fixed on the axle of the traction-roll. The counter-shaft is thus constantly driven directly by the engine, and to vary the speed at which the roll shall be driven and to stop the same a suitable friction-clutch 9 of any wellknown construction is provided on the counter-shaft, the pulley 7 being loose on the shaft and carrying one member of the clutch, the other member being splined on the shaft to turn therewith, all as ordinarily arranged. A suitable lever ll) is provided to move the mo *abic member into and out of contact with the pulley member, so that the operator by manipulating said lever may cause the machine to be propelled-over the floor at the desired speed, and extending upwardly from the rear end of the framcis a suitable handle 1], by means of which the machine is at the same time guided over the lloor.

r-idiuslabtv supported at the. forward end ,of the machinc-l'rame is :1 cylindrical rotary cutter or planer head 12 of any suitable con struction, the one shown being proi'ided with four straight knives, and said cutter is journalcd in suitable bearings on the verticallymovablc frame 13, which is attached to and vertically guided u poll the machine-frame by dovetail tongues and grooves .14 near each side of the frame. Said carrying-frame 13 is adiusted vertically to raise and lower the cuttcr by a scrcw 15, turning in a bearing in the machinc-frame and engaging a screwthreaded lug H5 on the carrving-frame, a

liaiul-wlwcl 17 being provided on its upper end to turn the same. Motion is transmitted from the counter-shalt 5 to turn the cutter by a belt lb, engaging a small pulleyon the projecting end of the cutter-shaft and a large pulley 10 on thc projecting end of the counter-shalt, said last-named pulley being loose on its shell and a suitable clutch it) being provided to'connect the pulley to and disconnect lhcsamclrom thoshaltsothat bymeans ol :1 suilabl lever ll lo opcratc said clutch the operator may stop the cut ler at any lime.

A reciprocating sanding or polishing device adapted to opcratc in conjunction with the cutter or plnncr l. is provided and consists of a sander-lucid 1;, attached to the lower side of a suitable bcnring-bloch 23, engaging and slidable longitudinally upon a machine-frame and parts. piemental cutter is used, asshown 1.0. Figs. 1

orally by rai ing or guiding and supporting rod 24, fixed in bearings upon a vertically-adjustable frame 25, said block being reciprocate'd upon said red by a connecting-rod 26, pivotally attached at one end between ears 2? on the upper side of the block and at its opposite end to a crankarm 28 on the, end of the counter-shaft 5. The block 23 is prevented from turning upon the rod 24 by providing the rod with a longitudinal groove 29 and the block with a tongue or feather 30 to engage said groove, and the rod is prevented from turning and is adapted to be adjusted longitudinally in its bearings by set-screws 31, extending through screw-threaded openings in the bearings and engaging said groove. The bearing or guide block 23 engages and travels upon the free end oi said rod, which projects forwardly fifll'li its bearin and beyond the forward end of the ii'tifii}, so that the sander-head 22 at each stroke is projected beyond the cutter and will work close up into the corners of the room, and the head is adjusted vertilowering the verticallyadjustahle 'rarne 25, which is guided in such mover out by tongues and grooves 32 and actuat d by a screw 33, provided with a handwheel 3 in the same manner as frame 13.

T he sander-head 22 is secured to the guideblock 223 by means oi a downwardly-curved hat spring 35, bolted intermediate its ends to the iower do of the block and at its ends to them is): sic of the head, so that should there be an great unevenness in the floor or any obstruction thereon the spring would yield slightly to permit the head to pass over withou t iu i ury to the floor or he ad The head chanil at its lower side'to receive a facing hlwll I36 and adjustable,angle-blocks 37, one at each end of the facing-block. The ends oi. the lacing-block are cut on a slant or incline from lower face of the block upward. and inward toward each other, and the adjustable angleblocl :s are formed at one, one. to ht these inclined ends,so that when a str oi sandpaper 32 is stretched over the t the lacing-block. with its placed liietweeu the slanting ends thereof and the adjustable blocks and the adjusting-blocks up hard against the ends of the facing-block by the set-screws 39 the paper will be firmly heid and at the same time stretched over 1 face of the said block, paper with its sanded side to ard the angle'or adjustingbioclrs,preventing the facing-block from falling out.

4.0 is a supplemental cutter-head which may be detachably secured in any suitable tn cutter 12 and is of a length equal to the wi th of the sander-head, so that it'will cut close up to the base-board and plane the margin ari'iund the floor which cannot be touched ii rtl'ie cutter 12, owing to its bearings and the Vv hen this supmit the auxiliary cutter to work up close to annexto the righhhand end of the shaft of and 2, the stroke of the sander-head must be shortened, so that it will play between the bearing-frame 25 and said cutter, or the use of said sander must be discontinued. To provide a long stroke, openings 4:1 to receive the crank-pin 42 are provided in the ends of the crank-arm 28 and connecting-rod 26, and the short stroke is secured by providing similar openingsin the crank and rod nearer the axis of the counter-shaft 5. The operator may at any time stop the operation of the sander by manipulating the lever 43, which is connected to a suitable clutch 44 for securing the cranlearm 28 to the counter-shaft 5, said arm being loose on said shaft, and to per the wall at its forward side the guide-rod 24 may be moved longitudinally in its bearings out of the way by loosening the set-screws 31, as shown in dotted lines in Figs. 1 and 2.

In operationthe sander-head is adjusted to engage the floor with slightpressure, and by giving it a reciprocating motion the resultbf its operation is similar to that of h an.d--polishing, except that,having an extended surface 9 and being guided horizontally, it evens and smooths the floor much better than it could i be done by hand.

By making the cutter and sander adjustable u'pon the 'i'rame toward. and from the floor a separate ad-iustment for each is secured which very iine and accurate, and by providing the several clutcl'iesior controlling the speed of the n izuvhire and for throwing the parts out of gear the operatin' h complete control of the C-PGZlttiif-R of the machine and after becoming expert in its oueration may do ve ryquiet and accurate .vo

Having thus fully described. my invention, what I claim i.s-- .105

1. in atraveling floor-surfacing machine, the combination with the frame, or" a motor supported upon said frame, (punter-shaft mounted in hearings on the frame, means for transmitting motion directly from the motor 1 I o to said shaft, traction-roll mounted in bearings on the frame near the forward end tluireof, a verticall adjustable frame attached to the for rd end of the rnachincirame and prov' led wit-n bearings, a horizontailycxtenalii cylindrical cutter mounted in said hr h means for adjustiiir, the adjustable rain U.) r c or lower the cutter, a horizon- Lll of, a pulley on said roll, caster-wheels to support the rear end of the frame, a pulley loose on thecounter-shaft, a friction-clutch one member of which is attached to said loose pulley and the other to the, shaft, a lever for moving theparts of the clutch into contact to transmit motion from the shaft to the pulley, avert'ieally-adjustable frame attached to the forward end of the machine-frame and provided with bearings, a horizontally-ex tending cylindrical cutter mounted in said bearings, means for adjusting the adjustable frame to raise or lower the cutter, a pulley attached to the cutter, a pulley on the end of the counter-shaft. belt engaging said pulleys, horizontally-extending guide supported on. the frame at one side thereof and pro- .jeciing forwardly past the front end of said frame, a guide-block movable longitudinally id guide, a sanding or polishing head secure d to said l)lO 'l-I, and means for rcciprocatthe block on the guide from the countershaft.

il. l

raveling' iloonsurfacing machine, ccmprisi Line, of a horizontally-extending cylin rll cutter-head mounted upon a shaft journaied in bearmgs on said frame, means for rotating said cutter, and an auxiliary CUtiI-liQZtil detachahly secured to one end of said shaft outside of its hearings and. extending nit-nerd t lrIOl rlOlli.

i. A trave ing iloonsurfa-cing machine,

comprising 1M, of rotar 'cutter n1ounted in b: Legs on. the frame and projecting laterally 1.\'- '1. one c said frame, a reciprocating sendermead supported by the frame at one side thereof and at the rear of the cutter, and for actuating said cutter and sander hear .5. in a floor-surfacing machine, the comoination with the machine-frame, of a horizontully-extending rotar cutter mounted in bearings at the forwar end of said frame, horizontally-extending guide adjustably secured in hearings in the frame and adapted to be projected. beyond the forward sideor' said cutter, a guide-block movable on said guide, a sander-head secured tosaid block and adapted to be reciprocated therewith upon the projecting end of said guide, and means mounted on said frame for actuating the cutter and sander head.

6; In a floor-surfacing machine, the combination with the machm'edrame, of a horizontally-extendin shaft mounted'm bearings at the forward end of the frame, a cylindrical adapted to be projected forwar cutter-head on said shaft between the bearings, an auxiliary cutter-head detachably secured to one end of said shaft outside its bearing and to project laterally outward from the machine-frame, a horizontal guide extending longitudinally :of the frame at the side thereof from which the auxiliary cutter projects and adjustably secured in bearings a sander-head guided by said uide and ly of the maohine-frame, a counter-shaft, a crankarm on said counter-shaft a connecting-rod attached to said arm and sanderheed, means for varying the length of stroke of the connecting-rod, and means for actuating the counter-shaft and the cutter-head shaft.

7. In a' floor-surfacing machine, the combination with the machine-frame, of a motor supported upon the frame, a counter shaft mounted in hearings on the frame, belt for transmitting a constant speed from the motor to the shaft, a traction-roll mounted in fixed hearings on the frame, apulley secured to said roll, a pulley mounted on the counter-shaft, a belt said pulley-"s, a friction-clutch on the noun to transmit motion to the loose pul '3, a vertically-- adjustable frame on tl e orward end of the machine-frame, an adjustingsscrew to raise and lower said adjusts-hi frame, a cylindrical cutter-head mounted in N f on the adjustable frame, a belt er pulley fixed on theeutter-head u counter-shah, a cl pulley to the shut,

attached. to the A machinefreme, a screw to adjust franc vertically, a longitudinally and horizontally extending guide-rod adjustahly secured in hearings on said last named adjustable and provided with a longitudinal groove, a guideblock slidahle on Tie projecting forward end of said, rod and having a rib-engaging said groove, a cranlwi rm on the counter-shaft having openings near its end, a connectingrod pivotaily attached at one end to the guide-block and having openings near its opposite end, a crank-pin to engage the openings in the ends of the ,arm and rod, and a sander-head secured to the guidablock.

In testimony whereof I ailix my signature in presence of two witnesses.

AUGUST POELKEQ Witnesses:

O'rro F. BARTHEL, LEWIS E. FLANDERS.

pretahle. 

